Egg Development in the Stonefly <i>Pteronarcys californica</i> Newport (Plecoptera: Pteronarcyidae)
Bibliographic record
Abstract
Eggs of Pteronarcys californica Newport were incubated at fixed temperatures between 5 and 20°C in the laboratory and at field temperatures in the Crowsnest River, Alberta. The regression of rate of development on temperature between 5–15°C gave a developmental zero of 3.125°C. Within the range 10–20°C, highest hatching success and fewest days to median hatch occurred at 15.0 or 17.5°C, but physiological time (day-degrees) for egg hatching increased with temperature throughout, markedly so above 15°C. A minimum of 182 days was required for 50% hatch in the laboratory, with no observable development for approximately 80 days. Eggs placed in the river on 25 May 1993 started to hatch on 17 October 1993, and the pulse of larval recruitment in the field population occurred between April and August, 11 to 15 months after oviposition. Eggs hatched over periods of 130–322 days at different temperatures in the laboratory, and over an 11-month period in the field. The placement of diapause early in embryonic development is suggested as a cause of extended recruitment. The variety of embryonic development in Plecoptera is briefly reviewed.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".